- Issued:
- 2026-07-24
- Updated:
- 2026-07-24
RHSA-2026:45114 - Important: kernel security update
Synopsis
Important: kernel security update
Type/Severity
Security Advisory: Important
Topic
An update for the kernel package is now available for Red Hat Enterprise Linux 10.
Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
Description
The kernel packages contain the Linux kernel, the core of any Linux operating system.
Security Fix(es):
- kernel: fs/notify: call exportfs_encode_fid with s_umount (CVE-2025-40237)
- kernel: scsi: core: Wake up the error handler when final completions race against each other (CVE-2026-23110)
- kernel: rtnetlink: add missing netlink_ns_capable() check for peer netns (CVE-2026-31692)
- kernel: net: ipv6: fix NOREF dst use in seg6 and rpl lwtunnels (CVE-2026-46099)
- kernel: futex: Drop CLONE_THREAD requirement for private default hash alloc (CVE-2026-52973)
- kernel: dm log: fix out-of-bounds write due to region_count overflow (CVE-2026-53059)
Solution
For details on how to apply this update, which includes the changes described in this advisory, refer to:
https://access.redhat.com/articles/11258
Affected Products
| Product | Version | Arch |
|---|---|---|
| Red Hat Enterprise Linux for x86_64 | 10 | x86_64 |
| Red Hat Enterprise Linux for x86_64 - Extended Update Support | 10.2 | x86_64 |
| Red Hat Enterprise Linux for x86_64 - Extended Life Cycle | 10.2 | x86_64 |
| Red Hat Enterprise Linux for x86_64 - 4 years of updates | 10.2 | x86_64 |
| Red Hat Enterprise Linux for Power, little endian | 10 | ppc64le |
| Red Hat Enterprise Linux for Power, little endian - Extended Update Support | 10.2 | ppc64le |
| Red Hat Enterprise Linux for Power, little endian - Extended Life Cycle | 10.2 | ppc64le |
| Red Hat Enterprise Linux for Power, little endian - 4 years of support | 10.2 | ppc64le |
| Red Hat Enterprise Linux for IBM z Systems | 10 | s390x |
| Red Hat Enterprise Linux for IBM z Systems - Extended Update Support | 10.2 | s390x |
| Red Hat Enterprise Linux for IBM z Systems - Extended Life Cycle | 10.2 | s390x |
| Red Hat Enterprise Linux for IBM z Systems - 4 years of updates | 10.2 | s390x |
| Red Hat Enterprise Linux for ARM 64 | 10 | aarch64 |
| Red Hat Enterprise Linux for ARM 64 - Extended Update Support | 10.2 | aarch64 |
| Red Hat Enterprise Linux for ARM 64 - Extended Life Cycle | 10.2 | aarch64 |
| Red Hat Enterprise Linux for ARM 64 - 4 years of updates | 10.2 | aarch64 |
| Red Hat CodeReady Linux Builder for x86_64 | 10 | x86_64 |
| Red Hat CodeReady Linux Builder for x86_64 - Extended Update Support | 10.2 | x86_64 |
| Red Hat CodeReady Linux Builder for Power, little endian | 10 | ppc64le |
| Red Hat CodeReady Linux Builder for Power, little endian - Extended Update Support | 10.2 | ppc64le |
| Red Hat CodeReady Linux Builder for IBM z Systems | 10 | s390x |
| Red Hat CodeReady Linux Builder for IBM z Systems - Extended Update Support | 10.2 | s390x |
| Red Hat CodeReady Linux Builder for ARM 64 | 10 | aarch64 |
| Red Hat CodeReady Linux Builder for ARM 64 - Extended Update Support | 10.2 | aarch64 |
Updated Packages
- kernel-rt-64k-debug-core-6.12.0-211.39.1.el10_2.aarch64.rpm
- kernel-rt-debug-devel-6.12.0-211.39.1.el10_2.x86_64.rpm
- kernel-rt-modules-extra-6.12.0-211.39.1.el10_2.aarch64.rpm
- kernel-uki-virt-addons-6.12.0-211.39.1.el10_2.x86_64.rpm
- kernel-64k-debug-core-6.12.0-211.39.1.el10_2.aarch64.rpm
- kernel-debug-modules-extra-6.12.0-211.39.1.el10_2.ppc64le.rpm
- kernel-debug-modules-extra-6.12.0-211.39.1.el10_2.s390x.rpm
- kernel-debuginfo-6.12.0-211.39.1.el10_2.aarch64.rpm
- kernel-headers-6.12.0-211.39.1.el10_2.x86_64.rpm
- kernel-rt-core-6.12.0-211.39.1.el10_2.x86_64.rpm
- kernel-rt-debug-modules-extra-6.12.0-211.39.1.el10_2.aarch64.rpm
- kernel-zfcpdump-modules-extra-6.12.0-211.39.1.el10_2.s390x.rpm
- perf-6.12.0-211.39.1.el10_2.ppc64le.rpm
- perf-debuginfo-6.12.0-211.39.1.el10_2.ppc64le.rpm
- python3-perf-6.12.0-211.39.1.el10_2.s390x.rpm
- kernel-64k-modules-core-6.12.0-211.39.1.el10_2.aarch64.rpm
- python3-perf-debuginfo-6.12.0-211.39.1.el10_2.x86_64.rpm
- kernel-debug-6.12.0-211.39.1.el10_2.ppc64le.rpm
- rv-6.12.0-211.39.1.el10_2.s390x.rpm
- perf-debuginfo-6.12.0-211.39.1.el10_2.aarch64.rpm
- kernel-modules-extra-matched-6.12.0-211.39.1.el10_2.ppc64le.rpm
- kernel-rt-debug-modules-core-6.12.0-211.39.1.el10_2.aarch64.rpm
- rtla-6.12.0-211.39.1.el10_2.aarch64.rpm
- kernel-debug-debuginfo-6.12.0-211.39.1.el10_2.aarch64.rpm
- rtla-6.12.0-211.39.1.el10_2.x86_64.rpm
- kernel-devel-6.12.0-211.39.1.el10_2.s390x.rpm
- kernel-modules-6.12.0-211.39.1.el10_2.x86_64.rpm
- kernel-cross-headers-6.12.0-211.39.1.el10_2.aarch64.rpm
- kernel-debug-core-6.12.0-211.39.1.el10_2.x86_64.rpm
- kernel-uki-virt-addons-6.12.0-211.39.1.el10_2.aarch64.rpm
- kernel-rt-64k-debug-modules-6.12.0-211.39.1.el10_2.aarch64.rpm
- perf-6.12.0-211.39.1.el10_2.x86_64.rpm
- kernel-core-6.12.0-211.39.1.el10_2.s390x.rpm
- kernel-debug-devel-6.12.0-211.39.1.el10_2.aarch64.rpm
- kernel-debug-modules-6.12.0-211.39.1.el10_2.ppc64le.rpm
- kernel-debug-modules-core-6.12.0-211.39.1.el10_2.x86_64.rpm
- kernel-core-6.12.0-211.39.1.el10_2.x86_64.rpm
- kernel-rt-modules-core-6.12.0-211.39.1.el10_2.aarch64.rpm
- kernel-tools-libs-6.12.0-211.39.1.el10_2.ppc64le.rpm
- libperf-debuginfo-6.12.0-211.39.1.el10_2.x86_64.rpm
- kernel-rt-debug-modules-6.12.0-211.39.1.el10_2.aarch64.rpm
- libperf-6.12.0-211.39.1.el10_2.x86_64.rpm
- kernel-cross-headers-6.12.0-211.39.1.el10_2.x86_64.rpm
- kernel-tools-6.12.0-211.39.1.el10_2.x86_64.rpm
- rtla-6.12.0-211.39.1.el10_2.ppc64le.rpm
- kernel-tools-6.12.0-211.39.1.el10_2.ppc64le.rpm
- kernel-64k-core-6.12.0-211.39.1.el10_2.aarch64.rpm
- kernel-modules-6.12.0-211.39.1.el10_2.ppc64le.rpm
- kernel-rt-debug-6.12.0-211.39.1.el10_2.x86_64.rpm
- python3-perf-debuginfo-6.12.0-211.39.1.el10_2.ppc64le.rpm
- rv-6.12.0-211.39.1.el10_2.x86_64.rpm
- kernel-6.12.0-211.39.1.el10_2.ppc64le.rpm
- kernel-64k-debuginfo-6.12.0-211.39.1.el10_2.aarch64.rpm
- kernel-debug-modules-core-6.12.0-211.39.1.el10_2.aarch64.rpm
- kernel-rt-core-6.12.0-211.39.1.el10_2.aarch64.rpm
- kernel-rt-devel-6.12.0-211.39.1.el10_2.x86_64.rpm
- libperf-debuginfo-6.12.0-211.39.1.el10_2.ppc64le.rpm
- kernel-cross-headers-6.12.0-211.39.1.el10_2.s390x.rpm
- python3-perf-debuginfo-6.12.0-211.39.1.el10_2.aarch64.rpm
- kernel-debug-6.12.0-211.39.1.el10_2.x86_64.rpm
- kernel-debug-devel-matched-6.12.0-211.39.1.el10_2.x86_64.rpm
- kernel-zfcpdump-debuginfo-6.12.0-211.39.1.el10_2.s390x.rpm
- kernel-tools-libs-6.12.0-211.39.1.el10_2.x86_64.rpm
- kernel-core-6.12.0-211.39.1.el10_2.ppc64le.rpm
- kernel-debug-devel-6.12.0-211.39.1.el10_2.s390x.rpm
- kernel-devel-6.12.0-211.39.1.el10_2.ppc64le.rpm
- kernel-64k-debug-debuginfo-6.12.0-211.39.1.el10_2.aarch64.rpm
- kernel-rt-debug-6.12.0-211.39.1.el10_2.aarch64.rpm
- kernel-tools-6.12.0-211.39.1.el10_2.aarch64.rpm
- kernel-rt-64k-debuginfo-6.12.0-211.39.1.el10_2.aarch64.rpm
- python3-perf-6.12.0-211.39.1.el10_2.x86_64.rpm
- rv-6.12.0-211.39.1.el10_2.aarch64.rpm
- libperf-6.12.0-211.39.1.el10_2.s390x.rpm
- kernel-debug-modules-core-6.12.0-211.39.1.el10_2.ppc64le.rpm
- kernel-64k-modules-extra-6.12.0-211.39.1.el10_2.aarch64.rpm
- kernel-rt-64k-debug-debuginfo-6.12.0-211.39.1.el10_2.aarch64.rpm
- kernel-rt-64k-debug-6.12.0-211.39.1.el10_2.aarch64.rpm
- kernel-modules-extra-6.12.0-211.39.1.el10_2.s390x.rpm
- kernel-debug-core-6.12.0-211.39.1.el10_2.s390x.rpm
- kernel-devel-matched-6.12.0-211.39.1.el10_2.x86_64.rpm
- kernel-rt-64k-core-6.12.0-211.39.1.el10_2.aarch64.rpm
- kernel-headers-6.12.0-211.39.1.el10_2.ppc64le.rpm
- kernel-devel-matched-6.12.0-211.39.1.el10_2.s390x.rpm
- kernel-64k-modules-6.12.0-211.39.1.el10_2.aarch64.rpm
- kernel-modules-extra-6.12.0-211.39.1.el10_2.aarch64.rpm
- kernel-rt-6.12.0-211.39.1.el10_2.aarch64.rpm
- kernel-devel-6.12.0-211.39.1.el10_2.aarch64.rpm
- kernel-64k-debug-6.12.0-211.39.1.el10_2.aarch64.rpm
- kernel-devel-6.12.0-211.39.1.el10_2.x86_64.rpm
- kernel-headers-6.12.0-211.39.1.el10_2.s390x.rpm
- kernel-64k-debug-modules-core-6.12.0-211.39.1.el10_2.aarch64.rpm
- kernel-64k-devel-matched-6.12.0-211.39.1.el10_2.aarch64.rpm
- kernel-rt-debug-core-6.12.0-211.39.1.el10_2.aarch64.rpm
- kernel-rt-debug-debuginfo-6.12.0-211.39.1.el10_2.aarch64.rpm
- kernel-tools-debuginfo-6.12.0-211.39.1.el10_2.ppc64le.rpm
- kernel-64k-debug-devel-matched-6.12.0-211.39.1.el10_2.aarch64.rpm
- kernel-debuginfo-6.12.0-211.39.1.el10_2.x86_64.rpm
- kernel-modules-6.12.0-211.39.1.el10_2.aarch64.rpm
- kernel-tools-libs-devel-6.12.0-211.39.1.el10_2.aarch64.rpm
- kernel-tools-libs-devel-6.12.0-211.39.1.el10_2.ppc64le.rpm
- kernel-zfcpdump-devel-6.12.0-211.39.1.el10_2.s390x.rpm
- perf-6.12.0-211.39.1.el10_2.s390x.rpm
- kernel-modules-core-6.12.0-211.39.1.el10_2.x86_64.rpm
- kernel-modules-extra-matched-6.12.0-211.39.1.el10_2.x86_64.rpm
- kernel-rt-debuginfo-6.12.0-211.39.1.el10_2.aarch64.rpm
- kernel-uki-virt-6.12.0-211.39.1.el10_2.aarch64.rpm
- kernel-debug-modules-6.12.0-211.39.1.el10_2.x86_64.rpm
- kernel-debug-uki-virt-6.12.0-211.39.1.el10_2.x86_64.rpm
- kernel-rt-64k-modules-6.12.0-211.39.1.el10_2.aarch64.rpm
- kernel-tools-libs-devel-6.12.0-211.39.1.el10_2.x86_64.rpm
- kernel-zfcpdump-6.12.0-211.39.1.el10_2.s390x.rpm
- perf-6.12.0-211.39.1.el10_2.aarch64.rpm
- kernel-modules-core-6.12.0-211.39.1.el10_2.ppc64le.rpm
- kernel-tools-libs-6.12.0-211.39.1.el10_2.aarch64.rpm
- perf-debuginfo-6.12.0-211.39.1.el10_2.s390x.rpm
- kernel-debug-debuginfo-6.12.0-211.39.1.el10_2.x86_64.rpm
- kernel-rt-modules-6.12.0-211.39.1.el10_2.x86_64.rpm
- kernel-modules-extra-6.12.0-211.39.1.el10_2.x86_64.rpm
- perf-debuginfo-6.12.0-211.39.1.el10_2.x86_64.rpm
- kernel-modules-core-6.12.0-211.39.1.el10_2.s390x.rpm
- kernel-64k-debug-modules-extra-6.12.0-211.39.1.el10_2.aarch64.rpm
- rtla-6.12.0-211.39.1.el10_2.s390x.rpm
- kernel-abi-stablelists-6.12.0-211.39.1.el10_2.noarch.rpm
- kernel-rt-64k-debug-devel-6.12.0-211.39.1.el10_2.aarch64.rpm
- kernel-debuginfo-common-ppc64le-6.12.0-211.39.1.el10_2.ppc64le.rpm
- kernel-rt-modules-core-6.12.0-211.39.1.el10_2.x86_64.rpm
- kernel-rt-64k-devel-6.12.0-211.39.1.el10_2.aarch64.rpm
- kernel-debug-6.12.0-211.39.1.el10_2.s390x.rpm
- kernel-rt-debug-devel-6.12.0-211.39.1.el10_2.aarch64.rpm
- kernel-debug-modules-extra-6.12.0-211.39.1.el10_2.aarch64.rpm
- kernel-rt-modules-6.12.0-211.39.1.el10_2.aarch64.rpm
- kernel-64k-6.12.0-211.39.1.el10_2.aarch64.rpm
- kernel-debug-modules-6.12.0-211.39.1.el10_2.s390x.rpm
- kernel-core-6.12.0-211.39.1.el10_2.aarch64.rpm
- kernel-debug-6.12.0-211.39.1.el10_2.aarch64.rpm
- kernel-rt-debug-modules-extra-6.12.0-211.39.1.el10_2.x86_64.rpm
- kernel-uki-virt-6.12.0-211.39.1.el10_2.x86_64.rpm
- kernel-6.12.0-211.39.1.el10_2.x86_64.rpm
- kernel-zfcpdump-modules-core-6.12.0-211.39.1.el10_2.s390x.rpm
- kernel-debuginfo-6.12.0-211.39.1.el10_2.s390x.rpm
- python3-perf-6.12.0-211.39.1.el10_2.ppc64le.rpm
- kernel-tools-debuginfo-6.12.0-211.39.1.el10_2.s390x.rpm
- rv-6.12.0-211.39.1.el10_2.ppc64le.rpm
- kernel-6.12.0-211.39.1.el10_2.s390x.rpm
- kernel-tools-6.12.0-211.39.1.el10_2.s390x.rpm
- libperf-debuginfo-6.12.0-211.39.1.el10_2.aarch64.rpm
- kernel-rt-64k-debug-modules-core-6.12.0-211.39.1.el10_2.aarch64.rpm
- kernel-rt-modules-extra-6.12.0-211.39.1.el10_2.x86_64.rpm
- kernel-debuginfo-common-x86_64-6.12.0-211.39.1.el10_2.x86_64.rpm
- kernel-headers-6.12.0-211.39.1.el10_2.aarch64.rpm
- kernel-modules-6.12.0-211.39.1.el10_2.s390x.rpm
- libperf-debuginfo-6.12.0-211.39.1.el10_2.s390x.rpm
- kernel-rt-debug-debuginfo-6.12.0-211.39.1.el10_2.x86_64.rpm
- kernel-debug-devel-6.12.0-211.39.1.el10_2.x86_64.rpm
- kernel-debug-modules-6.12.0-211.39.1.el10_2.aarch64.rpm
- kernel-debuginfo-common-aarch64-6.12.0-211.39.1.el10_2.aarch64.rpm
- kernel-rt-64k-6.12.0-211.39.1.el10_2.aarch64.rpm
- kernel-rt-devel-6.12.0-211.39.1.el10_2.aarch64.rpm
- kernel-64k-debug-modules-6.12.0-211.39.1.el10_2.aarch64.rpm
- kernel-debug-debuginfo-6.12.0-211.39.1.el10_2.ppc64le.rpm
- kernel-rt-64k-modules-extra-6.12.0-211.39.1.el10_2.aarch64.rpm
- kernel-rt-64k-modules-core-6.12.0-211.39.1.el10_2.aarch64.rpm
- libperf-6.12.0-211.39.1.el10_2.ppc64le.rpm
- kernel-debug-core-6.12.0-211.39.1.el10_2.aarch64.rpm
- kernel-debug-devel-matched-6.12.0-211.39.1.el10_2.ppc64le.rpm
- kernel-debug-debuginfo-6.12.0-211.39.1.el10_2.s390x.rpm
- kernel-debug-modules-extra-6.12.0-211.39.1.el10_2.x86_64.rpm
- kernel-rt-debuginfo-6.12.0-211.39.1.el10_2.x86_64.rpm
- kernel-tools-debuginfo-6.12.0-211.39.1.el10_2.aarch64.rpm
- kernel-6.12.0-211.39.1.el10_2.src.rpm
- python3-perf-debuginfo-6.12.0-211.39.1.el10_2.s390x.rpm
- kernel-6.12.0-211.39.1.el10_2.aarch64.rpm
- kernel-debug-core-6.12.0-211.39.1.el10_2.ppc64le.rpm
- kernel-debug-devel-matched-6.12.0-211.39.1.el10_2.s390x.rpm
- kernel-rt-debug-core-6.12.0-211.39.1.el10_2.x86_64.rpm
- kernel-modules-extra-6.12.0-211.39.1.el10_2.ppc64le.rpm
- kernel-modules-extra-matched-6.12.0-211.39.1.el10_2.s390x.rpm
- kernel-64k-debug-devel-6.12.0-211.39.1.el10_2.aarch64.rpm
- kernel-debuginfo-6.12.0-211.39.1.el10_2.ppc64le.rpm
- kernel-doc-6.12.0-211.39.1.el10_2.noarch.rpm
- kernel-devel-matched-6.12.0-211.39.1.el10_2.aarch64.rpm
- kernel-rt-6.12.0-211.39.1.el10_2.x86_64.rpm
- kernel-rt-64k-debug-modules-extra-6.12.0-211.39.1.el10_2.aarch64.rpm
- kernel-modules-core-6.12.0-211.39.1.el10_2.aarch64.rpm
- kernel-rt-debug-modules-core-6.12.0-211.39.1.el10_2.x86_64.rpm
- kernel-tools-debuginfo-6.12.0-211.39.1.el10_2.x86_64.rpm
- kernel-zfcpdump-core-6.12.0-211.39.1.el10_2.s390x.rpm
- kernel-zfcpdump-devel-matched-6.12.0-211.39.1.el10_2.s390x.rpm
- libperf-6.12.0-211.39.1.el10_2.aarch64.rpm
- python3-perf-6.12.0-211.39.1.el10_2.aarch64.rpm
- kernel-zfcpdump-modules-6.12.0-211.39.1.el10_2.s390x.rpm
- kernel-debug-devel-matched-6.12.0-211.39.1.el10_2.aarch64.rpm
- kernel-cross-headers-6.12.0-211.39.1.el10_2.ppc64le.rpm
- kernel-devel-matched-6.12.0-211.39.1.el10_2.ppc64le.rpm
- kernel-debug-devel-6.12.0-211.39.1.el10_2.ppc64le.rpm
- kernel-modules-extra-matched-6.12.0-211.39.1.el10_2.aarch64.rpm
- kernel-rt-debug-modules-6.12.0-211.39.1.el10_2.x86_64.rpm
- kernel-debuginfo-common-s390x-6.12.0-211.39.1.el10_2.s390x.rpm
- kernel-debug-modules-core-6.12.0-211.39.1.el10_2.s390x.rpm
- kernel-64k-devel-6.12.0-211.39.1.el10_2.aarch64.rpm
Fixes
- This content is not included.BZ - 2418829
- This content is not included.BZ - 2436755
- This content is not included.BZ - 2464093
- This content is not included.BZ - 2481972
- This content is not included.BZ - 2492277
- This content is not included.BZ - 2492413
CVEs
- CVE-2025-40237
- CVE-2026-23110
- CVE-2026-31692
- CVE-2026-46099
- CVE-2026-52973
- CVE-2026-53059
- This content is not included.CVE-2026-64561
References
Additional information
- The Red Hat security contact is This content is not included.secalert@redhat.com. More contact details at Security Contacts and Procedures.
- Offline Security Data data is available for integration with other systems. See Offline Security Data API to get started.